I think the audio is not at natural speed. It sounds speeded up. Also, I'm sure 'thấy' is not pronounced the way it is on this audio (whether it's southern or northern pronunciation).
Sounds slow to me compared to some other sentences. I can clearly hear each word and don't have to Follow the sentence for additional listening practice.
I agree. I heard "Tôi tím những.......etc". But a native speaker I consulted confirmed the DL version.
But it's definitely not the same as Google's and not the same as other pronunciations of thấy here on this site.
I think this is one of these things. If you are very familiar with a language, you hear the context, you understand what the speaker means, then your brain makes you hear the logical thing.